Other Tips to Remember 4 x 5 = 20 and 5 x 4 = 20
Skip Counting
- Skip counting is counting while skipping one or more numbers. To skip count by 5's, skip 4 numbers while counting. (5....10....15....20....) Many refer to this a "counting by 5's
- Skip counting by five is easy because the second number is a zero or five.
- 5 x 4 is skip counting four times or 5... 10... 15... 20 and you are at the answer
Double-Double
- To remember the 4 fact family, double the number that is being multiplied by 4 twice.
- For example, to multiply 4 x 5, 5 doubled once is 10, and 10 doubled is 20. The answer to 4 x 5 is 20.
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